The Korea Institute of Civil Engineering and Building Technology (KICT) has announced the development of an effective structural strengthening method using a noncombustible carbon textile grid and cement mortar, which can ...
Materials Science
Oct 26, 2020
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8
Researchers from RMIT University have developed an eco-friendly zero-cement concrete, which all but eliminates corrosion.
Materials Science
Sep 28, 2020
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18
A bioactive polymer-ceramic composite for fixing implants and restoring bone defects in the skull was developed by an international group of materials scientists from the NUST MISIS Center for Composite Materials. An innovative ...
Materials Science
Aug 12, 2020
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12
Cement is a mineral-based material that binds together sand and rock to form concrete. Although the use of cement stretches back into antiquity, scientists are still unclear on the exact process by which it transforms from ...
Materials Science
Aug 05, 2020
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7
It is the most widely used product in the world. Cement is indispensable yet its reputation has become quite tainted in the course of the ongoing climate debate. Mixed with water, sand and gravel, it results in concrete, ...
Materials Science
Jun 04, 2020
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48
Fly ash generated by coal-fired power stations is an environmental headache, creating groundwater and air pollution from vast landfills and ash dams. Some of the waste product can be repurposed into geopolymer concrete, such ...
Polymers
May 07, 2020
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5
Hope in the midst of crisis. Overflowing landfill sites in Asia may prove to be goldmines for local cement producers. So say researchers at the Norwegian research organization, SINTEF, who have extensive experience with the ...
Materials Science
Apr 22, 2020
5
22
There's a lot the average person doesn't know about concrete. For example, it's porous; it's the world's most-used material after water; and, perhaps most fundamentally, it's not cement.
Materials Science
Apr 06, 2020
6
370
When it comes to encouraging manufacturers to reduce their carbon dioxide (CO2) emissions, a carrot might be more effective than a stick. That's the approach taken by a recent U.S. tax code rule that offers credits to companies ...
Other
Feb 26, 2020
0
8
Researchers have developed a nondestructive and noninvasive optical technique that can determine the setting times for various types of cement paste, which is used to bind new and old concrete surfaces. The new method could ...
Optics & Photonics
Jan 16, 2020
0
8
In the most general sense of the word, a cement is a binder, a substance which sets and hardens independently, and can bind other materials together. The word "cement" traces to the Romans, who used the term "opus caementicium" to describe masonry which resembled concrete and was made from crushed rock with burnt lime as binder. The volcanic ash and pulverized brick additives which were added to the burnt lime to obtain a hydraulic binder were later referred to as cementum, cimentum, cäment and cement. Cements used in construction are characterized as hydraulic or non-hydraulic.
The most important use of cement is the production of mortar and concrete - the bonding of natural or artificial aggregates to form a strong building material which is durable in the face of normal environmental effects.
Cement should not be confused with concrete because the term cement explicitly refers to the dry powder substance. Upon the addition of water and/or additives the cement mixture is referred to as concrete, especially if aggregates have been added.
This text uses material from Wikipedia, licensed under CC BY-SA
